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INSTALLATION
Mounting: To minimize EMI, mount the unit on a
grounded surface using a metal spacer at the mounting
hole that is surrounded by a conductive pad
Sensor Selection: Choose a compatible SmartFan
Sensor shown in the SmartFan catalog or at
www.controlres.com/sensors.php.
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OPERATION
Fan Speed vs. Sensor Temperature
The relationship between fan speed, as a percentage of
full speed, and sensed temperature is shown in Figure 2.
Full speed occurs at the Control Temperature (TC).
Settings
Control Temperature (J2): Use this jumper to set
Control Temperature to 35°, 40°, or 45°C. Factory
setting is 40°C. If the P3 sensor is used, Control
Temperature settings are 74°, 80°, and 86°C.
Temperature Alarm Output (J3): An over-temperature
alarm output is provided at header J3 to drive a logic circuit.
Pins J3:C and J3:E are internally connected to the collector
and emitter of a phototransistor, respectively. This output is
intended for connection to a logic circuit.
| Alarm Type: |
Optically Isolated Phototransistor |
| Trigger: |
10°C above control temperature |
| Alarm States: |
Conducting (Closed), Below Trigger
Cut-Off (Open), Above Trigger
Cut-Off (Open), Un-powered State |
| Max. Voltage: |
30 VDC |
| Max. Current: |
1 mADC |
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